1. 2nd Department of Obstetrics and Gynaecology, Aristotle University of Thessaloniki, Greece
2. BlueWhite Crossmed AB, Sweden & 2nd Department of Obstetrics and Gynaecology, Aristotle University of Thessaloniki, Greece
3. Clinic Department of Obstetrics and Gynecology, Faculty of Medicine, Transilvania University of Brasov, Romania
4. Department of Obstetrics and Gynaecology, University of Thessaly, Larissa, Greece